公开(公告)号：US20220350347A1

公开(公告)日：2022-11-03

申请号：US17245446

申请日：2021-04-30

Applicant: Bell Textron Inc.

Inventor： Steven G. Hagerott ,  Jonathan Andrew Toth

IPC: G05D1/10 ,  G05D1/08 ,  G05B11/42

Abstract: Embodiments are directed to systems and methods for utilizing a two-degree-of-freedom model-following control law within an architecture of nested loop functions. This allows for the separation of command and feedback path requirements and enables the restrictions of the inner loops to be applied to the outer loop feedbacks. This method of restriction allows a better allocation of coordinated authority between the loops.

公开(公告)号：US20220221878A1

公开(公告)日：2022-07-14

申请号：US17149445

申请日：2021-01-14

Applicant: Bell Textron Inc.

Inventor： Steven G. Hagerott ,  Jonathan Andrew Toth

IPC: G05D1/08 ,  B64C29/00

Abstract: There is disclosed in one example an inner loop controller for an aircraft flight computer, including: a stall protection circuit to compute, for an attitude angle θ, an attitude limit θmax as a function of a flight path angle (γ) and an angle of attack limit (αmax); a transfer function circuit to convert θ to an attitude rate {dot over (θ)}, wherein {dot over (θ)} is a time derivative of θ; and a load protector circuit to compute a limit on {dot over (θ)} ({dot over (θ)}max) as a function of a load factor limit (Nz,max) and a true airspeed (v).

公开(公告)号：US11733714B2

公开(公告)日：2023-08-22

申请号：US17149445

申请日：2021-01-14

Applicant: Bell Textron Inc.

Inventor： Steven G. Hagerott ,  Jonathan Andrew Toth

IPC: G05D1/08 ,  B64C29/00 ,  G05D1/00 ,  B64C13/50

CPC classification number: G05D1/0808 ,  B64C29/0033 ,  G05D1/0055 ,  B64C13/503

Abstract: There is disclosed in one example an inner loop controller for an aircraft flight computer, including: a stall protection circuit to compute, for an attitude angle θ, an attitude limit θmax as a function of a flight path angle (γ) and an angle of attack limit (αmax); a transfer function circuit to convert θ to an attitude rate {dot over (θ)}, wherein {dot over (θ)} is a time derivative of θ; and a load protector circuit to compute a limit on {dot over (θ)} ({dot over (θ)}max) as a function of a load factor limit (Nz,max) and a true airspeed (v).